TABLE 4.
Mean total Mullen Scales of Early Learning raw scores, standard deviations, confidence intervals and the range of scores for each age group.
| Age (in months) | n | M† | SD | SE | 95% CI for M |
Minimum | Maximum | |
|---|---|---|---|---|---|---|---|---|
| Lower bound | Upper bound | |||||||
| 21–26 | 22 | 78.95 | 11.97 | 2.55 | 73.65 | 84.26 | 57.00 | 102.00 |
| 27–32 | 25 | 96.00* | 17.58 | 3.52 | 88.75 | 103.26 | 67.00 | 135.00 |
| 33–38 | 23 | 114.35* | 10.53 | 2.19 | 109.80 | 118.90 | 92.00 | 133.00 |
| 39–44 | 21 | 130.76* | 20.27 | 4.42 | 121.53 | 139.99 | 91.00 | 164.00 |
| 45–50 | 25 | 157.00* | 13.62 | 2.72 | 151.38 | 162.62 | 128.00 | 177.00 |
| 51–56 | 27 | 162.82 | 16.48 | 3.17 | 156.30 | 169.33 | 119.00 | 185.00 |
| 57–62 | 29 | 173.10 | 9.15 | 1.70 | 169.62 | 176.59 | 146.00 | 188.00 |
| 63–68 | 26 | 178.38 | 9.96 | 1.95 | 174.36 | 182.41 | 139.00 | 190.00 |
| Total | 198 | 138.85 | 37.42 | 2.66 | 133.60 | 144.09 | 57.00 | 190.00 |
†
, The mean raw score was computed by summing the raw scores obtained for four scales (visual reception, fine motor, receptive language, expressive language) and averaging this sum across participants;
*
, Mean increase is statistically significant, p < 0.05.
n, number; M, mean; CI, confidence interval; SD, standard deviation; SE, standard error.